Granted Patent
Utility
US 6,408,955 · App. 09/815,623
Hybrid sectional and coiled tubing drilling rig
Inventor:
Thomas C. Gipson
Patented Case
View Patent ↗
Granted: Jun 25, 2002
Filed: Mar 23, 2001
Inventor
Thomas C. Gipson
Assignee (at issue)
Precision Drilling Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.